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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* Copyright (c) 2009 Nordic Semiconductor. All Rights Reserved.</span>
<a name="l00002"></a>00002 <span class="comment"> *</span>
<a name="l00003"></a>00003 <span class="comment"> * The information contained herein is confidential property of Nordic</span>
<a name="l00004"></a>00004 <span class="comment"> * Semiconductor ASA.Terms and conditions of usage are described in detail</span>
<a name="l00005"></a>00005 <span class="comment"> * in NORDIC SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * Licensees are granted free, non-transferable use of the information. NO</span>
<a name="l00008"></a>00008 <span class="comment"> * WARRANTY of ANY KIND is provided. This heading must NOT be removed from</span>
<a name="l00009"></a>00009 <span class="comment"> * the file.</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> */</span>
<a name="l00012"></a>00012 
<a name="l00013"></a>00013 <span class="preprocessor">#include &lt;stdint.h&gt;</span>
<a name="l00014"></a>00014 
<a name="l00015"></a>00015 <span class="preprocessor">#include &quot;nrf.h&quot;</span>
<a name="l00016"></a>00016 <span class="preprocessor">#include &quot;<a class="code" href="simple__uart_8h.html" title="Simple UART driver.">simple_uart.h</a>&quot;</span>
<a name="l00017"></a>00017 <span class="preprocessor">#include &quot;nrf_delay.h&quot;</span>
<a name="l00018"></a>00018 <span class="preprocessor">#include &quot;nrf_gpio.h&quot;</span>
<a name="l00019"></a>00019 
<a name="l00020"></a><a class="code" href="group__nrf__drivers__simple__uart.html#gabae30008064ce450ab819949a692c511">00020</a> uint8_t <a class="code" href="group__nrf__drivers__simple__uart.html#gabae30008064ce450ab819949a692c511">simple_uart_get</a>(<span class="keywordtype">void</span>)
<a name="l00021"></a>00021 {
<a name="l00022"></a>00022   <span class="keywordflow">while</span>(NRF_UART0-&gt;EVENTS_RXDRDY!=1){}  <span class="comment">// Wait for RXD data to be received</span>
<a name="l00023"></a>00023   NRF_UART0-&gt;EVENTS_RXDRDY=0;
<a name="l00024"></a>00024   <span class="keywordflow">return</span> (uint8_t)NRF_UART0-&gt;RXD;
<a name="l00025"></a>00025 }
<a name="l00026"></a>00026 
<a name="l00027"></a><a class="code" href="group__nrf__drivers__simple__uart.html#gad4e7d17833960c77c90db7a5cb309a68">00027</a> <span class="keywordtype">bool</span> <a class="code" href="group__nrf__drivers__simple__uart.html#gad4e7d17833960c77c90db7a5cb309a68">simple_uart_get_with_timeout</a>(int32_t timeout_ms, uint8_t *<a class="code" href="group__spi__master__example.html#gae4cee0b144cc6cb01fc4c7b36e37a874">rx_data</a>)
<a name="l00028"></a>00028 {
<a name="l00029"></a>00029   <span class="keywordtype">bool</span> ret = <span class="keyword">true</span>;
<a name="l00030"></a>00030   <span class="keywordflow">while</span>(NRF_UART0-&gt;EVENTS_RXDRDY!=1)
<a name="l00031"></a>00031   {
<a name="l00032"></a>00032     <span class="keywordflow">if</span>(timeout_ms-- &gt;= 0)
<a name="l00033"></a>00033     {
<a name="l00034"></a>00034       <span class="comment">// wait in 1ms chunk before checking for status</span>
<a name="l00035"></a>00035       nrf_delay_us(1000);
<a name="l00036"></a>00036     }
<a name="l00037"></a>00037     <span class="keywordflow">else</span>
<a name="l00038"></a>00038     {
<a name="l00039"></a>00039       ret = <span class="keyword">false</span>;
<a name="l00040"></a>00040       <span class="keywordflow">break</span>;
<a name="l00041"></a>00041     }
<a name="l00042"></a>00042   }  <span class="comment">// Wait for RXD data to be received</span>
<a name="l00043"></a>00043 
<a name="l00044"></a>00044   <span class="keywordflow">if</span>(timeout_ms &gt;= 0)
<a name="l00045"></a>00045   {
<a name="l00046"></a>00046     <span class="comment">// clear the event and set rx_data with received byte</span>
<a name="l00047"></a>00047       NRF_UART0-&gt;EVENTS_RXDRDY=0;
<a name="l00048"></a>00048       *rx_data = (uint8_t)NRF_UART0-&gt;RXD;
<a name="l00049"></a>00049   }
<a name="l00050"></a>00050 
<a name="l00051"></a>00051   <span class="keywordflow">return</span> ret;
<a name="l00052"></a>00052 }
<a name="l00053"></a>00053 
<a name="l00054"></a><a class="code" href="group__nrf__drivers__simple__uart.html#ga6346f3ba3f0f1eaaa123064daa3df405">00054</a> <span class="keywordtype">void</span> <a class="code" href="group__nrf__drivers__simple__uart.html#ga6346f3ba3f0f1eaaa123064daa3df405">simple_uart_put</a>(uint8_t cr)
<a name="l00055"></a>00055 {
<a name="l00056"></a>00056   NRF_UART0-&gt;TXD = (uint8_t)cr;
<a name="l00057"></a>00057 
<a name="l00058"></a>00058   <span class="keywordflow">while</span> (NRF_UART0-&gt;EVENTS_TXDRDY!=1)
<a name="l00059"></a>00059   {
<a name="l00060"></a>00060     <span class="comment">// Wait for TXD data to be sent</span>
<a name="l00061"></a>00061   }
<a name="l00062"></a>00062 
<a name="l00063"></a>00063   NRF_UART0-&gt;EVENTS_TXDRDY=0;
<a name="l00064"></a>00064 }
<a name="l00065"></a>00065 
<a name="l00066"></a><a class="code" href="group__nrf__drivers__simple__uart.html#ga76e6bde269950e02affbff121c79d408">00066</a> <span class="keywordtype">void</span> <a class="code" href="group__nrf__drivers__simple__uart.html#ga76e6bde269950e02affbff121c79d408">simple_uart_putstring</a>(<span class="keyword">const</span> uint8_t *str)
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068   uint_fast8_t i = 0;
<a name="l00069"></a>00069   uint8_t ch = str[i++];
<a name="l00070"></a>00070   <span class="keywordflow">while</span> (ch != <span class="charliteral">&#39;\0&#39;</span>)
<a name="l00071"></a>00071   {
<a name="l00072"></a>00072     <a class="code" href="group__nrf__drivers__simple__uart.html#ga6346f3ba3f0f1eaaa123064daa3df405">simple_uart_put</a>(ch);
<a name="l00073"></a>00073     ch = str[i++];
<a name="l00074"></a>00074   }
<a name="l00075"></a>00075 }
<a name="l00076"></a>00076 
<a name="l00077"></a><a class="code" href="group__nrf__drivers__simple__uart.html#ga15ab88a2172a5ea02ff41ae9711bc0af">00077</a> <span class="keywordtype">void</span> <a class="code" href="group__nrf__drivers__simple__uart.html#ga15ab88a2172a5ea02ff41ae9711bc0af">simple_uart_config</a>(  uint8_t rts_pin_number,
<a name="l00078"></a>00078                           uint8_t txd_pin_number,
<a name="l00079"></a>00079                           uint8_t cts_pin_number,
<a name="l00080"></a>00080                           uint8_t rxd_pin_number,
<a name="l00081"></a>00081                           <span class="keywordtype">bool</span> hwfc)
<a name="l00082"></a>00082 {
<a name="l00083"></a>00083   <span class="comment">/* Power ON the UART0 peripheral */</span>
<a name="l00084"></a>00084   NRF_POWER-&gt;PERPOWER |= (POWER_PERPOWER_UART0_Power &lt;&lt; POWER_PERPOWER_UART0_Pos);
<a name="l00085"></a>00085 
<a name="l00086"></a>00086   <span class="comment">/* Wait for the power up */</span>
<a name="l00087"></a>00087   <span class="keywordflow">while</span> ( (NRF_POWER-&gt;PERRDY &amp; POWER_PERRDY_UART0_Msk) == (POWER_PERRDY_UART0_NotReady &lt;&lt; POWER_PERRDY_UART0_Pos) )
<a name="l00088"></a>00088   {
<a name="l00089"></a>00089   }
<a name="l00090"></a>00090   
<a name="l00091"></a>00091   <a class="code" href="group__nrf__gpio.html#ga0271806dc37bffea02d199474d526a35" title="Configure given GPIO pin number as output with given initial value set, hiding inner details...">nrf_gpio_cfg_output</a>(txd_pin_number);
<a name="l00092"></a>00092   <a class="code" href="group__nrf__gpio.html#ga4e63d442ebd572126be3e030b3df4dc6" title="Configure given GPIO pin number as input with given initial value set, hiding inner details...">nrf_gpio_cfg_input</a>(rxd_pin_number, <a class="code" href="group__nrf__gpio.html#gga07e0c8c0b30499cf0a7b79dbe62d3fcca13ffcb94eb78be866c66b5f5b516af65" title="Pin pullup resistor disabled.">NRF_GPIO_PIN_NOPULL</a>);  
<a name="l00093"></a>00093 
<a name="l00094"></a>00094   NRF_UART0-&gt;PSELTXD = txd_pin_number;
<a name="l00095"></a>00095   NRF_UART0-&gt;PSELRXD = rxd_pin_number;
<a name="l00096"></a>00096 
<a name="l00097"></a>00097   <span class="keywordflow">if</span>(hwfc)
<a name="l00098"></a>00098   {
<a name="l00099"></a>00099     <a class="code" href="group__nrf__gpio.html#ga0271806dc37bffea02d199474d526a35" title="Configure given GPIO pin number as output with given initial value set, hiding inner details...">nrf_gpio_cfg_output</a>(rts_pin_number);
<a name="l00100"></a>00100     <a class="code" href="group__nrf__gpio.html#ga4e63d442ebd572126be3e030b3df4dc6" title="Configure given GPIO pin number as input with given initial value set, hiding inner details...">nrf_gpio_cfg_input</a>(cts_pin_number, <a class="code" href="group__nrf__gpio.html#gga07e0c8c0b30499cf0a7b79dbe62d3fcca13ffcb94eb78be866c66b5f5b516af65" title="Pin pullup resistor disabled.">NRF_GPIO_PIN_NOPULL</a>);
<a name="l00101"></a>00101     NRF_UART0-&gt;PSELCTS = cts_pin_number;
<a name="l00102"></a>00102     NRF_UART0-&gt;PSELRTS = rts_pin_number;
<a name="l00103"></a>00103     NRF_UART0-&gt;CONFIG           = (UART_CONFIG_HWFC_Enabled &lt;&lt; UART_CONFIG_HWFC_Pos);
<a name="l00104"></a>00104   }
<a name="l00105"></a>00105 
<a name="l00106"></a>00106   NRF_UART0-&gt;BAUDRATE         = (UART_BAUDRATE_BAUDRATE_Baud38400 &lt;&lt; UART_BAUDRATE_BAUDRATE_Pos);
<a name="l00107"></a>00107   NRF_UART0-&gt;ENABLE           = (UART_ENABLE_ENABLE_Enabled &lt;&lt; UART_ENABLE_ENABLE_Pos);
<a name="l00108"></a>00108   NRF_UART0-&gt;TASKS_STARTTX    = 1;
<a name="l00109"></a>00109   NRF_UART0-&gt;TASKS_STARTRX    = 1;
<a name="l00110"></a>00110   NRF_UART0-&gt;EVENTS_RXDRDY    = 0;
<a name="l00111"></a>00111 }
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